The Celebration of the 500th Anniversary of the Reformation

This month , Protestants of many stripes will celebrate the beginning of the reformation, when an Augustinian monk named Martin Luther nailed his thesis to a church door in Germany. Sadly, he originally protested the selling of indulgences, but ultimately he divided the Church Jesus started. The fruit of this was thousands upon thousands of Protestant denominations, each one claiming to have the correct interpretation of the bible, and basing their novel new theologies on these disparate interpretations.
  As Jesus' earthly ministry came to its end, he prayed specifically that the Church would remain one.
In all the celebrating this month, I can only hope in a more sober moment of reflection, that the celebrants will think of how Luther's actions led to a splintering and division of the Church  Jesus prayed would always remain united in their faith.